Slack has recently launched shared channels, which allow organizations to seamlessly communicate with each other's teams without using email. Shared channels can be used for various purposes, such as collaborating with external contributors, freelancers, or creative agencies. To create a shared channel, you need to be a Slack Workspace Owner or Admin and have a Standard or Plus plan. The process involves adding team members, giving the channel a name, and inviting another organization's Workspace Owner or Admin. Shared channels can be public or private for both teams, and it's essential to set clear guidelines and expectations for use. With shared channels, you can streamline communication, improve collaboration, and increase productivity across different organizations.